def main1(a,b,c,d,e,f,g):
    x_list=[a,b,c,d,e,f,g]
    for n in range(0,len(x_list)):
        if  x_list.count(x_list[n]) == 1:
            print(x_list[n])
            break


def main2():
    for n in range(1,21):
        print(f'{n}',end=' ')


def say_hello():
    print('hello')
    print('hello')
    print('hello')


""" 
函数注释
打印三次hello
"""

say_hello()


import work_module
work_module.print_work1('*',50)
work_module.print_work2('*',50)
work_module.print_work3('*',50)


def main5():
    a=list(range(1,11))
    b=[x for x in range(5)]
    c=[[x*m for x in range(5)] for m in range(5)]
    print(a)
    print(b)
    print(c)
    a.pop()
    b.insert(5,5)
    c.remove([0,0,0,0,0])
    print(a)
    print(b)
    print(c)
    a.pop(2)
    b.clear()
    c_len=len(c)
    print(a)
    print(b)
    print(c_len)
    a_count=a.count(1)
    b.append(9)
    c.sort(reverse=True)
    print(b)
    print(a_count)
    print(c)
    c.sort()
    print(c)


def main6(a,b,c,d,e,f,g,h):
    x_list=[a,b,c,d,e,f,g,h]
    for n in range(0,len(x_list)):
        if  x_list.count(x_list[n]) == 1:
            print(x_list[n])





